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    <title>glDrawRangeElements - OpenGL ES 3 Reference Pages</title>
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    <div class="refentry" id="glDrawRangeElements">
      <div class="titlepage"/>
      <div class="refnamediv">
        <h2>Name</h2>
        <p>glDrawRangeElements — render primitives from array data</p>
      </div>
      <div class="refsynopsisdiv">
        <h2>C Specification</h2>
        <div class="funcsynopsis">
          <table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
            <tr>
              <td>
                <code class="funcdef">void <strong class="fsfunc">glDrawRangeElements</strong>(</code>
              </td>
              <td>GLenum <var class="pdparam">mode</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>GLuint <var class="pdparam">start</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>GLuint <var class="pdparam">end</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>GLsizei <var class="pdparam">count</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>GLenum <var class="pdparam">type</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>const GLvoid * <var class="pdparam">indices</var><code>)</code>;</td>
            </tr>
          </table>
          <div class="funcprototype-spacer"> </div>
        </div>
      </div>
      <div class="refsect1" id="parameters">
        <h2>Parameters</h2>
        <div class="variablelist">
          <dl class="variablelist">
            <dt>
              <span class="term">
                <em class="parameter">
                  <code>mode</code>
                </em>
              </span>
            </dt>
            <dd>
              <p>
                    Specifies what kind of primitives to render.
                    Symbolic constants
                    <code class="constant">GL_POINTS</code>,
                    <code class="constant">GL_LINE_STRIP</code>,
                    <code class="constant">GL_LINE_LOOP</code>,
                    <code class="constant">GL_LINES</code>,
                    <code class="constant">GL_TRIANGLE_STRIP</code>,
                    <code class="constant">GL_TRIANGLE_FAN</code> and
                    <code class="constant">GL_TRIANGLES</code>
                    are accepted.
                </p>
            </dd>
            <dt>
              <span class="term">
                <em class="parameter">
                  <code>start</code>
                </em>
              </span>
            </dt>
            <dd>
              <p>
                    Specifies the minimum array index contained in <em class="parameter"><code>indices</code></em>.
                </p>
            </dd>
            <dt>
              <span class="term">
                <em class="parameter">
                  <code>end</code>
                </em>
              </span>
            </dt>
            <dd>
              <p>
                    Specifies the maximum array index contained in <em class="parameter"><code>indices</code></em>.
                </p>
            </dd>
            <dt>
              <span class="term">
                <em class="parameter">
                  <code>count</code>
                </em>
              </span>
            </dt>
            <dd>
              <p>
                    Specifies the number of elements to be rendered.
                </p>
            </dd>
            <dt>
              <span class="term">
                <em class="parameter">
                  <code>type</code>
                </em>
              </span>
            </dt>
            <dd>
              <p>
                    Specifies the type of the values in <em class="parameter"><code>indices</code></em>. Must be one of
                    <code class="constant">GL_UNSIGNED_BYTE</code>, <code class="constant">GL_UNSIGNED_SHORT</code>, or
                    <code class="constant">GL_UNSIGNED_INT</code>.
                </p>
            </dd>
            <dt>
              <span class="term">
                <em class="parameter">
                  <code>indices</code>
                </em>
              </span>
            </dt>
            <dd>
              <p>
                    Specifies a byte offset (cast to a pointer type) into the buffer bound to <code class="constant">GL_ELEMENT_ARRAY_BUFFER</code>
                    to start reading indices from. If no buffer is bound, specifies a pointer to the location where the indices are stored.
                </p>
            </dd>
          </dl>
        </div>
      </div>
      <div class="refsect1" id="description">
        <h2>Description</h2>
        <p>
            <code class="function">glDrawRangeElements</code> is a restricted form of <a class="citerefentry" href="glDrawElements.xhtml"><span class="citerefentry"><span class="refentrytitle">glDrawElements</span></span></a>. <em class="parameter"><code>mode</code></em>, <em class="parameter"><code>count</code></em>,
            and <em class="parameter"><code>type</code></em> match the corresponding arguments to <a class="citerefentry" href="glDrawElements.xhtml"><span class="citerefentry"><span class="refentrytitle">glDrawElements</span></span></a>, with
            the additional constraint that all values in the arrays <em class="parameter"><code>count</code></em> must lie
            between <em class="parameter"><code>start</code></em> and <em class="parameter"><code>end</code></em>, inclusive.
        </p>
        <p>
            Implementations denote recommended maximum amounts of vertex and
            index data,
            which may be queried by calling <a class="citerefentry" href="glGet.xhtml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument
            <code class="constant">GL_MAX_ELEMENTS_VERTICES</code> and <code class="constant">GL_MAX_ELEMENTS_INDICES</code>.
            If
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                    <mml:mo>+</mml:mo>
                    <mml:mn>1</mml:mn>
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            is greater than the value of
            <code class="constant">GL_MAX_ELEMENTS_VERTICES</code>, or if <em class="parameter"><code>count</code></em> is greater than the value of
            <code class="constant">GL_MAX_ELEMENTS_INDICES</code>, then the call may operate at reduced
            performance.  There is no requirement that all vertices in the range
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                <mml:mfenced open="[" close="]">
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                    <mml:mi mathvariant="italic">end</mml:mi>
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            </mml:math>
            be referenced.  However, the implementation may
            partially process unused vertices, reducing performance from what could
            be achieved with an optimal index set.
        </p>
        <p>
            When <code class="function">glDrawRangeElements</code> is called, it uses <em class="parameter"><code>count</code></em> sequential elements from an
            enabled array, starting at <em class="parameter"><code>start</code></em> to construct a sequence of
            geometric primitives. <em class="parameter"><code>mode</code></em> specifies what kind of primitives are
            constructed, and how the array elements construct these primitives. If
            more than one array is enabled, each is used.
        </p>
        <p>
            To enable and disable a generic vertex attribute array, call
            <a class="citerefentry" href="glEnableVertexAttribArray.xhtml"><span class="citerefentry"><span class="refentrytitle">glEnableVertexAttribArray</span></span></a> and
            <a class="citerefentry" href="glDisableVertexAttribArray.xhtml"><span class="citerefentry"><span class="refentrytitle">glDisableVertexAttribArray</span></span></a>.
        </p>
        <p>
            If an array corresponding to a generic attribute required by a vertex shader
            is not enabled, then the corresponding element is taken from the current generic
            attribute state.
        </p>
      </div>
      <div class="refsect1" id="errors">
        <h2>Errors</h2>
        <p>
            It is an error for indices to lie outside the range
            <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
                
                <mml:mfenced open="[" close="]">
                    <mml:mi mathvariant="italic">start</mml:mi>
                    <mml:mi mathvariant="italic">end</mml:mi>
                </mml:mfenced>
            </mml:math>,
            but implementations may not check for this situation. Such indices
            cause implementation-dependent behavior.
        </p>
        <p>
            <code class="constant">GL_INVALID_ENUM</code> is generated if <em class="parameter"><code>mode</code></em> is not an accepted value.
        </p>
        <p>
            <code class="constant">GL_INVALID_VALUE</code> is generated if <em class="parameter"><code>count</code></em> is negative.
        </p>
        <p>
            <code class="constant">GL_INVALID_VALUE</code> is generated if
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                <mml:mrow>
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                    <mml:mo>&lt;</mml:mo>
                    <mml:mi mathvariant="italic">start</mml:mi>
                </mml:mrow>
            </mml:math>.
        </p>
        <p>
            <code class="constant">GL_INVALID_OPERATION</code> is generated if a non-zero buffer object name is bound to an
            enabled array or the element array and the buffer object's data store is currently mapped.
        </p>
        <p>
            <code class="constant">GL_INVALID_FRAMEBUFFER_OPERATION</code> is generated if the currently bound framebuffer is not
            framebuffer complete (i.e. the return value from
            <a class="citerefentry" href="glCheckFramebufferStatus.xhtml"><span class="citerefentry"><span class="refentrytitle">glCheckFramebufferStatus</span></span></a> is not <code class="constant">GL_FRAMEBUFFER_COMPLETE</code>).
        </p>
        <p>
            <code class="constant">GL_INVALID_OPERATION</code> is generated if transform feedback is active and not paused.
        </p>
      </div>
      <div class="refsect1" id="associatedgets">
        <h2>Associated Gets</h2>
        <p>
            <a class="citerefentry" href="glGet.xhtml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_MAX_ELEMENTS_VERTICES</code>
        </p>
        <p>
            <a class="citerefentry" href="glGet.xhtml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_MAX_ELEMENTS_INDICES</code>
        </p>
      </div>
      <div class="refsect1" id="versions">
        <h2>API Version Support</h2>
        <div class="informaltable">
          <table style="border-collapse: collapse; border-top: 2px solid ; border-bottom: 2px solid ; border-left: 2px solid ; border-right: 2px solid ; ">
            <colgroup>
              <col style="text-align: left; "/>
              <col style="text-align: center; " class="firstvers"/>
              <col style="text-align: center; " class="lastvers"/>
            </colgroup>
            <thead>
              <tr>
                <th style="text-align: left; border-right: 2px solid ; ">
                 
            </th>
                <th style="text-align: center; border-bottom: 2px solid ; " colspan="2">
                <span class="bold"><strong>OpenGL ES API Version</strong></span>
            </th>
              </tr>
              <tr>
                <th style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
                <span class="bold"><strong>Function Name</strong></span>
            </th>
                <th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
                <span class="bold"><strong>2.0</strong></span>
            </th>
                <th style="text-align: center; border-bottom: 2px solid ; ">
                <span class="bold"><strong>3.0</strong></span>
            </th>
              </tr>
            </thead>
            <tbody>
              <tr>
                <td style="text-align: left; border-right: 2px solid ; ">glDrawRangeElements</td>
                <td style="text-align: center; border-right: 2px solid ; ">-</td>
                <td style="text-align: center; ">✔</td>
              </tr>
            </tbody>
          </table>
        </div>
      </div>
      <div class="refsect1" id="seealso">
        <h2>See Also</h2>
        <p>
            <a class="citerefentry" href="glCheckFramebufferStatus.xhtml"><span class="citerefentry"><span class="refentrytitle">glCheckFramebufferStatus</span></span></a>,
            <a class="citerefentry" href="glDisableVertexAttribArray.xhtml"><span class="citerefentry"><span class="refentrytitle">glDisableVertexAttribArray</span></span></a>,
            <a class="citerefentry" href="glDrawArrays.xhtml"><span class="citerefentry"><span class="refentrytitle">glDrawArrays</span></span></a>,
            <a class="citerefentry" href="glDrawElements.xhtml"><span class="citerefentry"><span class="refentrytitle">glDrawElements</span></span></a>,
            <a class="citerefentry" href="glDrawArraysInstanced.xhtml"><span class="citerefentry"><span class="refentrytitle">glDrawArraysInstanced</span></span></a>,
            <a class="citerefentry" href="glDrawElementsInstanced.xhtml"><span class="citerefentry"><span class="refentrytitle">glDrawElementsInstanced</span></span></a>,
            <a class="citerefentry" href="glEnableVertexAttribArray.xhtml"><span class="citerefentry"><span class="refentrytitle">glEnableVertexAttribArray</span></span></a>,
        </p>
      </div>
      <div class="refsect1" id="Copyright">
        <h2>Copyright</h2>
        <p>
            Copyright <span class="trademark"/>© 1991-2006 Silicon Graphics, Inc.
            Copyright <span class="trademark"/>© 2010-2014 Khronos Group.
            This document is licensed under the SGI Free Software B License.
            For details, see
            <a class="link" href="http://oss.sgi.com/projects/FreeB/" target="_top">http://oss.sgi.com/projects/FreeB/</a>.
        </p>
      </div>
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